that's certainly a nice room, but not what i'd do, if i had the means... first, i agree w/the negative aspects about the solitude of it all. second, i wouldn't want any hard surfaces behind the 1st reflection point of the speakers. in this room, there's a hard floor, windows, & that bowed wall. i'd want all that covered. if i were gonna have any hard surfaces, it would be *behind* me. third, i would not want my equipment basically out in front of one speaker like that. in this case, there is so much room behind the speakers (a good thing, imo), that the equipment could be placed against the front wall in the center, w/much less interference to the sound, & perhaps less sonic disturbances to the equipment itself.
in any ewent, it's still a wery nice room. of course, if *i* had a barn like that to start with, i'd have it turned into a nice garage w/a hydraulic lift, workshop counters/cabinets...
ymmv,
doug s.